guslarskepesme.com XSS vulnerability

Vulnerable URL: http://guslarskepesme.com/index.php?option=comgooglesearchcse=30=0=016580109213687132537%3Amshy7xnoacq=FORID%3A9=UTF-8=%22%3E%3Cimg+src%3Dx+onerror%3Dprompt%28%2Fopenbugbounty%2F%29%3E=%D0%9F%D1%80%D0%B5%D1%82%D1%80%D0%B0%D0%B3%D0%B0=sr=https%3A%2F%2Fwww.google.com Details:...